News Releases

New Drill Results Include 4.21 Metres Grading 8.66 g/t Gold and 37.57 g/t Silver
Vancouver, British Columbia: Douglas Forster, Chairman of Calibre Mining Corp. (TSX-V: CXB) (the “Company” or “Calibre”) is pleased to announce additional results from the Phase II delineation diamond drilling program on the Company’s 100%-owned Riscos de Oro epithermal gold-silver project in the Borosi Concessions of Northeast Nicaragua.

The Phase II drilling consisted of an additional 19 diamond drill holes totaling 4867.2 metres and was successful in expanding and further defining high-grade gold-silver mineralization at the Riscos de Oro project. Assays results have now been received for all holes. Previously unreleased results from the Phase II Drill Program include;

Hole ID
Zone
From (m)
To (m)
Interval (m)
Gold (g/t)
Silver (g/t)
RD11-031
Upper
148.50
151.15
2.65
3.33
11.22
including
148.50
149.60
1.10
6.06
14.90
Lower
219.06
223.60
4.54
2.03
12.18
including
221.10
222.10
1.00
7.25
15.8
RD11-032
No Significant Results
RD11-033
Upper
191.50
193.00
1.50
0.13
0.10
Middle
211.00
219.00
8.00
2.38
2.28
including
214.00
219.00
5.00
3.66
2.32
Lower
272.87
274.45
1.58
1.94
6.90
Lower
302.00
303.40
1.40
0.26
2.40
RD11-034
No Significant Results
RD11-035
Upper
117.75
119.43
1.68
0.19
1.40
RD11-036
Upper
134.63
138.00
3.37
0.22
10.06
RD11-037
Upper
167.05
168.00
0.95
0.19
1.80
Middle
191.98
193.17
1.19
0.12
8.80
Lower
250.39
254.60
4.21
8.66
37.57
including
251.79
252.98
1.19
24.74
84.60

Notes:

  1. All reported intercepts are core lengths and true widths are estimated at 80 per cent of core lengths
  2. Weighted averages calculated using uncut assays.

Douglas Forster, Chairman of Calibre stated: “A total of 37 diamond drill holes totaling 9494 metres have been completed at Calibre’s 100% owned Riscos de Oro project which has successfully outlined a continuously mineralized gold-silver zone 725 metres long and to a depth of 300 metres. The mineralized zone consists of one to three closely spaced sub-parallel vein structures each averaging between three to six metres in width. The majority of the 7.0 km long Riscos de Oro gold-silver trend remains untested by diamond drilling”.

Highlights of the diamond drilling completed to date at the Riscos de Oro project include:

Hole ID
Thickness (m) 1
Au Grade (g/t)2
Ag Grade (g/t)2
AuEq (g/t) 3
RD10-001
5.80
2.44
292.60
7.84
RD10-002
4.90
0.97
28.72
1.50
RD11-003
3.40
8.81
55.74
9.84
RD10-005
4.14
9.04
30.02
9.59
RD10-009
8.53
4.23
384.86
11.34
RD11-010
1.50
5.98
9.10
6.15
and
4.20
2.50
5.16
2.60
RD11-011
3.62
6.41
139.21
8.98
RD11-012
10.60
7.69
211.87
11.60
RD11-013
5.08
0.82
2.76
0.87
RD11-014
3.03
1.54
46.30
2.39
RD11-015
2.20
5.44
405.55
12.93
RD11-016
7.10
2.72
287.65
8.03
and
4.29
3.20
13.30
3.45
RD11-017
3.90
9.31
336.06
15.51
RD11-018
1.39
9.11
14.33
9.37
RD11-019
5.80
9.37
64.8
10.57
RD11-021
8.64
4.4
24.12
4.85
RD11-024
2.35
7.75
15.49
8.04
RD11-025
2.95
4.23
449.8
12.53
RD11-026
2.58
8.74
120.5
10.96
RD11-027
4.60
2.28
11.56
2.49
RD11-029
2.45
10.30
56.71
11.35
RD11-031
2.65
3.33
11.22
3.54
RD11-037
4.21
8.66
37.57
9.35

Notes:

  1. All reported intercepts are core lengths and true widths are estimated at 80 per cent of core lengths
  2. Weighted averages calculated using uncut assays.
  3. AuEq (g/t): Gold Equivalent calculated using $1,300/oz gold and $24.0/oz Ag and metallurgical and net smelter returns are assumed to be 100%.

During 2011, Calibre completed a regional soil survey program at Riscos de Oro that included over 1,500 soil samples that defined anomalous gold values over a three kilometre strike length in the vicinity of the Riscos de Oro deposit. Additional soil sampling has extended the gold-in-soil anomaly for a further four kilometres for an overall strike length of seven kilometres towards the southwest where historic sampling of a trench in the El Paraiso-Murcielago area returned 3.0 metres grading 12.43 g/t gold and 93.0 g/t silver.

The Company is currently compiling all drilling and exploration data in order to complete a detailed and upgraded geological and structural interpretation for the Riscos de Oro gold-silver project.

Additional maps and assay results for all drill holes on the Riscos de Oro project can be found at www.calibremining.com.

Quality assurance and quality control procedures include the systematic insertion of blanks, standards and duplicates into the rock sample strings. Samples are placed in sealed bags and shipped directly to Inspectorate Labs in Managua, Nicaragua for sample preparation and then to Inspectorate Labs in Vancouver, Canada for gold and silver fire assay and ICP multi element analyses. The technical content in this news release was read and approved by Gregory Smith, P.Geo, Vice President, Exploration and a Qualified Person (“QP”) as defined by NI 43-101.

About Calibre Mining Corp.
Calibre Mining Corp. is a TSX Venture Exchange listed company (TSX.V: CXB) that is focused on the acquisition, exploration and development of gold, copper and silver deposits in Central America. The Company is focused on advancing its 100% owned Riscos de Oro gold-silver project, the drilling program at the Primavera gold-copper porphyry prospect in conjunction with B2 Gold Corp., and the drilling program on the Rosita copper-gold-silver project in conjunction with Alder Resources Ltd.

CALIBRE MINING CORP.

Signed “Douglas Forster”

Douglas Forster, M.Sc., P.Geo.
Chairman


For further information contact:
Mark Carruthers - Vancouver, Canada
604 681 9944
www.calibremining.com

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Note Regarding Forward Looking Statements
Safe Harbour Statement under the United States Private Securities Litigation Reform Act of 1995: Except for the statements of historical fact contained herein, the information presented constitutes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements including but not limited to those with respect to the price of gold, silver or copper, potential mineralization, reserve and resource determination, exploration results, and future plans and objectives of the Company involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievement of Calibre Mining Corp. to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. There can be no assurance that such statements will prove to be accurate as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.


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